const uuid = function (format) {
  const s = []
  const hexDigits = '0123456789abcdef'
  for (let i = 0; i < 36; i++)
    s[i] = hexDigits.substr(Math.floor(Math.random() * 0x10), 1)

  s[14] = '4'
  s[19] = hexDigits.substr((s[19] & 0x3) | 0x8, 1)
  s[8] = s[13] = s[18] = s[23] = '-'

  const uuid = s.join('')
  if (format)
    return uuid.split('-').join('')

  return uuid
}

export const uuids = uuid
// module.exports = {
//     uuid
// }
